# passing vehicle analysis

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 December 17, 2005, 02:32 passing vehicle analysis #1 wilson Guest   Posts: n/a hi guys, i have a project in which i have to simulate the effects of a passing truck on a stationary vehicle (sedan) in a tunnel. Now i am totally blank on this type of analysis. Can any one guide me how to start the analysis procedure. regards wilson

 December 17, 2005, 18:36 Re: passing vehicle analysis #2 rohan Guest   Posts: n/a for, this you have to begin with basics or find a partner who canhelp u out....

 December 18, 2005, 13:00 Re: passing vehicle analysis #3 akin Guest   Posts: n/a Rohan I don't think your comments make any sense or helpful. I know Fluent, has an ad on the net about solving such a problem. Perhaps you can do a search on their website or on the internet. Good luck

 December 19, 2005, 04:02 Re: passing vehicle analysis #4 Michael Bo Hansen Guest   Posts: n/a Not much help, but then again: I know STAR-CD has a tutorial ( tutorial 11? ) about 2 trains passing each other. Maybe you can come up with some guidance rules from that case even though it is not the same software. Kind Regards

 December 21, 2005, 14:12 range of lift/drag ratio for airfoils? #5 rohan Guest   Posts: n/a hai??? can any one tell me any exact answer for this with some explainations????

 December 27, 2005, 16:05 Re: passing vehicle analysis #6 Jeff Guest   Posts: n/a Wilson, Since there is a stationary object, you'll have to model this with a sliding mesh. For this, the ends will have to be periodic. That is, you are simulating a series of moving vehicles one after the other. If you space them "very" far apart, you can approach a condition of negligible end effects for a single vehicle. Look at the examples in CFX for using a sliding mesh with periodics. Specifically, you need a linear example (as opposed to rotational). Good Luck, Jeff

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